Solution: Assuming that the IQ test has a mean of 100 and a standard deviation of 15, how many students fell one standard deviation below the tests mean?


Question: Assuming that the IQ test has a mean of 100 and a standard deviation of 15, how many students fell one standard deviation below the tests mean? Two standard deviations below the tests mean? What percentage of students had an IQ score less than or equal to 70? An IQ score greater or equal to 100? What assumptions could you make about the test scores and suitability of this test for this group of students?

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